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單項(xiàng)選擇題

A developer wants too use EL to invoke a function using S{my:bloof(“foof”)}. Which is always true?()

A. The method invoked by this function must be statie.
B. The function class must implement the Function interface.
C. The expression is NOT a valid EL expression for invoking a function.
D. The function must be declared in a web.xml file using the  element.
E. The function class must have a method with the signature:Void bloof (java.lang.Strings)

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